The M16A2 buttstock is about 5/eight" of an inch for a longer period then the earlier designs. Because of the elevated size it employed an extended buttstock screw as well as a spacer. The swivel is mounted nearer on the buttplate. This buttstock is now applied about the M16A4: Up https://raymondeelli.shopping-wiki.com/8772008/the_basic_principles_of_colt_combat_elite_commander_45_acp